See NEC 250.52. If there is 10 feet of pipe in the ground, that qualifies as a grounding electrode. The foundation rebar qualifies as a grounding electrode too, but it must have a length of at least 20 feet. If using multiple pieces to get 20 feet they must be bonded (or simply wired) together. Kent Osterberg Blue Mountain Solar, Inc. toddc...@finestplanet.com wrote:
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